The Circulation of Ideas in Firms and Markets
---- Acknowledgements -----
We would like to thank Daron Acemoglu, Amar Bhidé, Oliver Hart, Josh Lerner, Scott Stern, and seminar participants at the AEA-AFE session on Financing Innovation in Philadelphia, London School of Economics, London Business School, NBER Entrepreneurship Group, NBER Organizational Economics Group, Stanford GSB, University College London, University of Amsterdam, and the University of British Columbia, for their valuable comments. All errors are ours. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.